linux_dsm_epyc7002/arch/sh/kernel
Peter Zijlstra 58c644ba51 sched/idle: Fix arch_cpu_idle() vs tracing
We call arch_cpu_idle() with RCU disabled, but then use
local_irq_{en,dis}able(), which invokes tracing, which relies on RCU.

Switch all arch_cpu_idle() implementations to use
raw_local_irq_{en,dis}able() and carefully manage the
lockdep,rcu,tracing state like we do in entry.

(XXX: we really should change arch_cpu_idle() to not return with
interrupts enabled)

Reported-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/20201120114925.594122626@infradead.org
2020-11-24 16:47:35 +01:00
..
cpu Fix for arch/sh build regression with newer binutils, removal of SH5, 2020-06-06 15:22:01 -07:00
syscalls mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
vsyscall mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c
crash_dump.c
debugtraps.S
disassemble.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dma-coherent.c dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h> 2020-10-06 07:07:06 +02:00
dumpstack.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
dwarf.c
entry-common.S sh: fix syscall tracing 2020-09-13 21:22:55 -04:00
ftrace.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
head_32.S
hw_breakpoint.c
idle.c sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
io_trapped.c sh: unexport register_trapped_io and match_trapped_io_handler 2020-08-14 22:05:16 -04:00
io.c
iomap.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
ioport.c sh: don't include <asm/io_trapped.h> in <asm/io.h> 2020-08-14 22:05:16 -04:00
irq_32.c
irq.c
kdebugfs.c
kgdb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kprobes.c sh: kprobes: Use generic kretprobe trampoline handler 2020-09-08 11:52:34 +02:00
machine_kexec.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
machvec.c Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
Makefile sh: remove -Werror from Makefiles 2020-08-14 22:05:13 -04:00
module.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
nmi_debug.c
perf_callchain.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
perf_event.c
process_32.c Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
process.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
ptrace_32.c sh: fix syscall tracing 2020-09-13 21:22:55 -04:00
ptrace.c
reboot.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
relocate_kernel.S
return_address.c
setup.c initrd: remove support for multiple floppies 2020-07-30 08:22:33 +02:00
sh_bios.c
sh_ksyms_32.c sh: Add missing DECLARE_EXPORT() for __ashiftrt_r4_xx 2020-06-01 14:48:49 -04:00
signal_32.c tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() 2020-10-17 15:04:36 -06:00
smp.c
stacktrace.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
swsusp.c
sys_sh32.c
sys_sh.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
syscalls_32.S
time.c
topology.c
traps_32.c uaccess: add force_uaccess_{begin,end} helpers 2020-08-12 10:57:59 -07:00
traps.c maccess: rename probe_kernel_address to get_kernel_nofault 2020-06-18 11:14:40 -07:00
unwinder.c
vmlinux.lds.S vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG 2020-09-01 09:50:35 +02:00